HomeAuthorsPosts by Sundareswaran Iyalunaidu

Sundareswaran Iyalunaidu

With over 24 years of dedicated experience, I am a seasoned professional specializing in the commissioning, maintenance, and installation of Electrical, Instrumentation and Control systems. My expertise extends across a spectrum of industries, including Power stations, Oil and Gas, Aluminium, Utilities, Steel and Continuous process industries. Tweet me @sundareshinfohe
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Instrumentation Questions

Control Valve Cavitation Troubleshooting Quiz

Advanced Control Valve Cavitation Troubleshooting Questions Control valve cavitation occurs when liquid pressure falls below vapor pressure, creating vapor bubbles that later collapse as pressure recovers. In process plants, this can produce severe noise, vibration, trim erosion, pitting, unstable flow, and premature valve failure. The...
Communication

PROFIBUS Communication Failure Step by Step Diagnosis

Table of ContentsWhat Is a PROFIBUS Communication Failure?Common PROFIBUS Communication Failure SymptomsPROFIBUS Communication Failure vs PROFIBUS Slave FailureCommon Causes of PROFIBUS Communication ErrorsHow to Troubleshoot PROFIBUS Communication FailureStep 1 Identify the PROFIBUS Failure PatternStep 2 Check PLC and PROFIBUS Master & Slave DiagnosticsStep 3...
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Calibration

Calibration of capacitance type level transmitter

Table of ContentsCalibration principle:Calibration SetupSafetyMethod of calibration Range selection:Zero calibration:Span Calibration:Calibration verification: Recording calibration dataSample calibration...
Instrumentation

Single line diagram

Table of ContentsWhat is single-line diagram meaning?Why are single-line diagrams important?Where is single-line diagram...
Calibration

How to calibrate displacer type level transmitter – Interface liquid application

Table of ContentsPurpose and Scope:Tools required for Calibration:Calibration SetupSafety Calibration procedure workbenchWhat is Dry calibration?Disassembly...
Instrumentation

Control Room Layout Design for Industrial Automation Systems

Table of ContentsWhat is a Control Room Layout?Importance of Control Room Layout in Process...
Control Valve

How to do maintenance on struck control valve?

Table of ContentsPurpose and scope:Tools required for maintenance on struck control valve:Safety To solve any...
Instrumentation

Rack room layout diagram

What is Rack room layout diagram? A rack room layout diagram is a two-dimensional elevation...
Calibration

Control Valve Stroke Checking -Complete Procedure, Errors, Setup, and FAQ

Table of ContentsWhat is Stroke Checking of Control Valves?Purpose and Scope of Control Valve...
Calibration

Displacer Level Transmitter Calibration Using Weight for Single Liquid Applications

Table of ContentsWhat is a Displacer Level Transmitter?Working Principle of Displacer Type Level TransmitterStep-by-Step...
PLC

One shot raising and one shot falling instructions in PLC

Table of ContentsOne-Shot InstructionExample of DIFU /One Shot InstructionList few application of One shot...
Instrumentation

Define accuracy and precision

Table of ContentsWhat is the meaning of Measurement?What is meant by Accuracy?Define ResolutionWhat is...
Instrumentation

Difference between accuracy and precision

Table of ContentsAccuracyPrecisionComparison Chart between Accuracy & precision Key difference between Accuracy & PrecisionBull Eye...
Instrumentation

Difference between repeatability and reproducibility

Table of ContentsRepeatabilityWhat is meant by Repeatability?What is the reason for poor repeatability?EquipmentAppraiserHow to...
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Instrumentation Questions

Control Valve Cavitation Troubleshooting Quiz

Advanced Control Valve Cavitation Troubleshooting Questions Control valve cavitation occurs when liquid pressure falls below...
Communication

PROFIBUS Communication Failure Step by Step Diagnosis

Table of ContentsWhat Is a PROFIBUS Communication Failure?Common PROFIBUS Communication Failure SymptomsPROFIBUS Communication Failure...
Instrumentation Calculators

Measurement Uncertainty Calculator: Calculate Combined and Expanded Uncertainty Using GUM

Measurement Uncertainty Calculator - GUM Method #muc-wrap, #muc-wrap * { box-sizing: border-box !important;...
SIS/ESD

Shutdown Philosophy: Engineering Documentation for Process Safety and Emergency Shutdown Systems

Table of ContentsWhat is Shutdown Philosophy and Why is it Important? What Is a Shutdown...